Unknown interapplication communication error every time I start Cubase 12

Why do I get this message every time I start Cubase and how do I get rid of it ?

Unsure… but you should update Cubase to the latest version. You’re on 12.0.0 and the current release is 12.0.40

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Please run the Steinberg Download Assistant to automatically update all supporting software, and download the latest version of Cubase.

Where did you even download 12.0.0 from?

Ok, I’ll try to update, thanks !